Four Dimensional Black Holes in String Theory
Abstract
Exact solutions of heterotic string theory corresponding to four-dimensional charge Q magnetic black holes are constructed as tensor products of an SU(2)/Z(2Q+2) WZW orbifold with a (0,1) supersymmetric SU(1,1)/U(1) WZW coset model. The spectrum is analyzed in some detail. ``Bad'' marginal operators are found which are argued to deform these theories to asymptotically flat black holes. Surprising behaviour is found for small values of Q, where low-energy field theory is inapplicable. At the minimal value Q=1, the theory degenerates. Renormalization group arguments are given that suggest the potential gravitational singularity of the low-energy field theory is resolved by a massive two-dimensional field theory. At Q=0, a stable, neutral ``remnant,'' of potential relevance to the black hole information paradox, is found.
Cite
@article{arxiv.hep-th/9305083,
title = {Four Dimensional Black Holes in String Theory},
author = {S. B. Giddings and J. Polchinski and A. Strominger},
journal= {arXiv preprint arXiv:hep-th/9305083},
year = {2009}
}
Comments
37 pages + 1 figure (tar compressed and uuencoded)